ASCII visualisation

Tried to find a way to visualize, I’d like to have some feedback on that and the API content.

    GET, POST, PATCH, DELETE
    v    ^     +      -


    v...  /notebook
          |
    v...  /- api   :html doc
          |
    v^..  /- book
          |  |
    v.+.  |  /- {book}
          |     |    Q
    v...  |     |    +- ?page[number]=n
          |     |    +- &page[size]=n
          |     |    +- ?|&filter[date-from]={ts}
          |     |    +- &filter[date-to]={ts}
          |     |    +- &sort=-ts    :defaults to latest date first
          |     |    +- &fields[note]={},.,{} <- title|body|ts
          |     |    Q
    ..+.  |     |    +- &fields[book]={},.,{} <- book|about
          |     |
    v^..  |     /- notes     
          |     |  |   |
          |     |  |   -> 303 redirect /notebook/{book}?page=1&sort=-ts
          |     |  |
    v.+.  |     |  /- {id}
          |     |     | Q
    v...  |     |     | +- &fields[note]={},.,{} <- title|body|ts
          |     |     | Q
    ..+.  |     |     | +- &fields[note]={} <- ts_eol|title|body|ref
          |     |     |
    v...  |     |     /- history
          |     |     |        Q
    v...  |     |     |        +-- &fields[note]={},.,{} <- title|body|ts
          |     |     |
    v.+.  |     |   ( /- relationships/note/{id} )
          |     |     |
    v...  |     |     /- thread
          |     |             Q
    v...  |     |             +-- &fields[note]={},.,{} <- title|body|ts
          |     |
    v.+.  |   ( /- relationship/note/{id} )
          |               
    v...  /- feed
          |  |
    v...  |  /- atom
          |  |  |
    v...  |  |  /- book    :last 10 notes of all books
          |  |     |
    v...  |  |     /- {book}   :last 10 notes of book
          |  |
    v...  |  /- rss
          |  |   |
    v...  |  |   /- book
          |  |      |
    v...  |  |      /- {book}
          |  |
    v...  |  /- stream    :sse
          |          |
          |          -> notebook
          |          -> notebook:{book}      
          |
    v...  /- search
                  Q
                  +-- ?q={...} <-- SQLite fts5 options   
                      |
                      +- &filter[book]={},.,{}
                      +- &filter[note]={} <-- title|body
                      +- &page[number]=n
                      +- &page[size]=n